mental calculation in Vietnamese

@Chuyên ngành kỹ thuật
@Lĩnh vực: toán & tin
-phép tính nhẩm

Sentence patterns related to "mental calculation"

Below are sample sentences containing the word "mental calculation" from the English - Vietnamese Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "mental calculation", or refer to the context using the word "mental calculation" in the English - Vietnamese Dictionary.

1. The present invention relates to an abacus structure having an improved structure such that, besides the main function of performing a calculation function, some or all of the upper abacus beads and the lower abacus beads of the abacus can be selectively fixed, in order to improve mental calculation learning effect.